chore(package): update stylelint to version 13.1.0

Closes #48

Author: greenkeeper[bot]

package.json

@@ -61,7 +61,7 @@
     "jest": "^22.2.2",
     "jest-styled-components": "^5.0.0",
     "prettier": "^1.10.2",
-    "stylelint": "^9.0.0",
+    "stylelint": "^13.1.0",
     "stylelint-config-standard": "^18.0.0",
     "stylelint-config-styled-components": "^0.1.1",
     "stylelint-processor-styled-components": "^1.2.2"